Surface modification of polypropylene hollow fiber membranes using fluorosilane for CO2 absorption in a gas-liquid membrane contactor

Conventional methods for improving the hydrophobicity of polypropylene (PP) membranes to prevent wetting phenomena require complex pretreatment procedures in order activate surface enabling reaction with fluorosilane (FS)-based materials. This study successfully prepared PP membrane contactors enhanced through a simple single-step dip-coating method using perfluoroether-grafted silanes CO2 capture. The FS coating layer on was confirmed ATR-FTIR spectroscopy, XPS, FE-SEM, and EDS. Furthermore, evaluation absorption performance long-term stability FS-coated according variation gas flow rate (50, 100, 200, 400, 800 mL/min) superior chemical durability our those previously reported hydrophobic membranes. as-prepared expands application scope gas-liquid capture from flue coal-fired power plants.